Gas-heating sad-iron.



` No. 628,235; Patented July 4, |899.

STERN. GkS'l-IEATINS SAD IRUN.

(Appumon mad 1m. 25, 1899.)

(No Mode-I.)

UNITED STATES PATENT OFFICE.

EDWARD STERN, OF BOSTON, MASSACHUSETTS.

GAS-HEATING SAD-IRON.

SPECIFICATION forming part of Letters Patent No. 628,235, dated July 4,1899.

Application tiled March 25, 1899. Serial No. 710,426. No model.)

Be it known that l, EDWARD STERN, a citizen of the United States,residing at Boston, in the countyof Suffolk and State of Massachusetts,have invented certain new and useful Improvements in Gas-HeatingSad-Irons, and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to figures ofreference marked thereon, which form a part of this specification.

The objects of this invention are, first, to provide a locking devicefor securing the heater within the body of the iron which shall besimple and strong in construction and permit of ready insertion andremoval of said heater, and, second, to increase the efficiency of ltheheater by distributing the heat of the gas-flame moregenerallythroughout its interior. I carry out these objects in manner ashereinafter explained.

The drawings accompanying this specification represent in Figure 1 aside elevation, in Fig. 2 a vertical longitudinal section, and in Fig. 3a vertical cross-section, of a sad-iron containing` my improvements.Fig. Alisa plan of the body of the iron with the handle and gas-supplypipe removed. Fig. 5 is a view of the cylindrical tube or collet, whichserves as a means of confining the heater to the body of the iron. Fig.6 is a view of the heater removed from the body of the iron. Fig. 7 is aView of the shank or base of the handle, showing the manner of securingthe handle to the body of the-iron. Fig. 8 is a horizontal section ofthe joint between the handle and the body of the iron.

In the drawings the body of the iron is shown at 1 as a hollow box ofthe requisite shape, such box being provided at various points in itssides with openings 2 to break up its radiating-surface and preventundue heating of its top.

The heater for heating the bottom of the iron is shown at 3 as composedof a hollow case which when in place extends from the rear to or near tothe front of the iron and centrally and longitudinally of the latter,the rear end of this case 3 terminating in a fiat plate or head 5, whichpartially, though not entirely, closes the rear of the'iron.

For cert-ain reasons pertaining to the casting of the heater its bottomG is cast independently of its body and is simply interposed betweensuch body and the bottom of the iron, and I prefer, in order to provideincreased radiating-surface, to cast lateral wings or extensions 7 7upon the exterior of the case 3. A passage 7 is left between the bottomof the heater and the body thereof for passage of heated vapor to theinterior of the iron.

8 in the drawings denotes a vertical tapering opening formed in the topof the case 3 and openin g into the interior of the latter, thisopening, when the iron is complete, being occupied by the lower end of avertical cylindrical tube or co1let 9, which serves not only as aconductor to convey gas to the interior of the case 3, but to lock suchcase in place within the body of the iron. To accomplish this latterobject, I cast upon the top of the body of the iron a tubular boss orextension ll, the lower part of the bore of this boss serving to receiveloosely the upper end of the collet 9 before named.

Upon one side of the top of the collet 9 I cast a spur 9', the uppersurface of this spur, when the iron is complete, being practically on alevel with the bottom of the dovetailed groove which receives the bottomof the base of the handle of the iron. The hand-grasp of the handle isshown at 15, its side arms at 1U 16, these arms terminating at bottom ina com mon base 17, the bottom of such base terminating in a dovetail rib1S, which when the iron is complete tightly fills a corresponding groove1i), formed in the top of the boss 11. This dovetailed joint serves toprevent vertical displacement of the handle, while in order to preservea tight joint, which shall prevent endwise loosening` of said handle,the rib 18 and groove 19 may be made slightly tapering or wedge-shapedlongitudinally of the iron. The bottom of the rib 18 rests immediatelyover the top of the spur 9 of the collet 9, thus preventing lifting ofthe collet and escape of the heater.

IOO

The gas-supply pipe is shown at 20 as formed 22, which extends into theuppper part of the bore of the collet 9. Gas flows through the pipe 20and becomes mixed with air, which passes into the bore of the boss l1through inlets 23, formed in the walls of such boss, these openings 23also permitting of the introduction of a lighted match to ignite Ithegas issuing from the nozzle or burner of the gas-pipe.

In order to facilitate and increase the distribution of heat throughoutthe chamber of the ease 3, such chamber increases in height from thecenter outward to each end thereof.

To assemble the various parts of this iron in preparing it for use, themovable 'bottom of the heater is held in place against the under side ofsuch heater and the two inserted in place within the body of the iron.The tubular collet 9 is now dropped into the bore of the boss 1l untilthe lowerend of such eollet is seated in the opening S in the top of theheater 3, thereby preventing withdrawal of the latter. The handle isnext added by driving its rib 1S endwise into the channel 19 in the topof the body of the iron, thereby preventing escape of the collet 9, and,lastly, the end of the gas-pipe is inserted within the bore of the baseof the handle until the burner of such pipe extends into the upper partof the collet 9.

It will be apparent that in order to release and permit of removal ofthe heater the collet 9 must first be lifted to such an extent as toremove its lower end from ont of the seat in the top of such heater, andthat this cannot be done until the rib 18 of the handle is removed fromthe channel 19 in the top of the iron.

I claim- In a sad-iron, the combination of the yhollow body, with aheater acting on the bottom thereof, a tube supplying ignited gas to thesaid heaterand fitting into a passage through the top of the saidiron-body, a handle having a passage through its base, and a pipe eX-tending from a source of gas-supply through said base and discharginginto said tube, the said handle-base being provided with a wedgeform ribwhich bears on a part of the said tube to lock it in place,substantially as set forth.

EDWARD STERN.

Vitnesses:

T. P. STERN, F. CURTIS.

